Saudi Arabia /ˌsaʊ.di əˈɹeɪ.bi.ə/ noun1 •A country in West Asia in the Middle East. Official name: Kingdom of Saudi Arabia. Capital: Riyadh.Little did anyone dream that Sa’udi Arabia possessed the world's largest oil reserves, which would eventually bring incredible wealth and power but would also undermine an ancient Eastern way of life. — 1983